Rewind shaft injector



W. GODDARD ETAL Aug. 21, 1956 REWIND SHAFT INJECTOR 5 Sheeis-Sheet 2Filed Feb. 2, 1954 INVENTOR Her/aer1-Zu'6b and m H mm m M. Z d

5 1956 H. w. GODDARD ETAL 2,759,678

REWIND SHAFT INJECTOR Filed Feb. 2, 1954 3 Sheets-Sheet. 3

Herber/Zl/So oldarcl an 1. eon aral lPo c/rs'l'rorn ATTORNEY UnitedStates Patent REWIND SHAFT INJECTOR Herbert W. Goddard, Rosedale, andLeonard Rockstrom,

Manhasset, N. Y., assignors to Cameron Machine Company, Brooklyn, N. Y.,a corporation of New York Application February 2, 1954, Serial No.407,632 15 Claims. (Cl. 242-66) This invention relates to a rewind shaftinjector or loader and it is primarily useful on a winding or rewindingmachine such as that shown in pending application 390,002, filedNovember 3, 1953.

Paper or other material is unwound from a mill roll and rewound in arewind machine, and prior to effecting this rewinding, the web is slitinto narrower widths. The running web after slitting is rewound in thevalley between closely spaced parallel winding rolls by surface contactwith those rolls. The paper is initially threaded upon a rewind shaftmounted in bearings at each end of the winding rolls and the shaftcontaining the paper thereon is rotated by the winding rolls, both beingrotated in the same direction. Although the rewind shaft has generallybeen lowered between the winding rolls by hand, it has been found thatlowering it mechanically into this valley and into the bearingssupporting it is far superior in avoiding injury to the winding rollsand the shaft and obtaining speedy and accurate alignment of the rewindshaft with the bearings for the rewind shaft.

This invention therefore contemplates an injector or loader for taking ashaft from the ready trough and lifting it over the highest horizontalpoint on the front winding roll from which it rolls down to receivingarms which lower it slowly and accurately into the rewind shaft bearingsand into the valley between the two winding rolls. The lifting orpick-up arms are preferably geared to the lowering arms and both arepreferably concentric in their pivotal movement with the front rewindshaft. The pickup arms have a longer stroke or are of movement than thelowering arms and a pinion mounted adjacent the arms is positioned toco-operate with racks on each pair of arms to produce this greater areof movement for the pick-up arms. Double acting hydraulic cylinders areconnected to each pick-up arm and because the arms are geared togetherthe movement of the pick-up arms is oppositely imparted to the loweringarms. A synchronizing shaft is attached by levers to the lowering armswhich assures that the two sets of arms at each end of the front windingroll operate in unison.

Other objects and advantages of the invention will be apparent from thefollowing description and the accompanying drawings in which:

Figure l is a sectional view of the front of a rewind machine embodyingthe shaft injector of the present invention.

Figure 2 is a fragmentary sectional view showing the lowering arm at oneend of the machine, and its geared connection to the correspondingpick-up arm.

Figure 3 is a sectional view of the pick-up and lowering arms on theleft end of the machine from their left side.

Figures 4 and 5 are sectional Views on line 55 of Figure 3 through thefront winding roll and the pick-up and lowering arms, with the center ofthe roll being omitted and Figure 5 being a continuation of Figure 4 tothe right.

In the drawings similar numerals refer to similar parts throughout theseveral views.

The winding machine has a base 1 and end uprights 2 and the running web3 enters the machine from the rear, passing over a compensating roll notshown and forming no part of this invention and under backing roll 5 andthen over front winding roll 6 to the rewind shaft 7 in the valleybetween the front winding roll 6 and the rear winding roll 8, the rewindshaft 7 being held by rewind shaft clamps or bearings 9 mounted oncarriages 10. The front winding roll 6 has attached to its ends shortshafts 11 and 12 riding in bearings 13 mounted in frame sections 14 inthe base members 1 at the ends of the machine. The front winding roll isdriven through flexible coupling 15 on the end of short shaft 12.

Short shafts 11 and 12 have thereon flanged collars 16 rigidly attachedto frame sections 14. These flanged collars each have on their innersides a stub shaft 17 carrying a pinion 18. Rotating on flange collars16 are pick-up arms 19 which have forwardly projecting points as shownin Figures 1 and 3, these points projecting out beyond the ends of readytrough 20 on which a rewind shaft is initially placed. The rewind shaftsintended to be used in the instant invention have a spool end whichrotates on the shaft, the flanges of the spool being shown at 21.Likewise the other end 22 of this rewind shaft 7 rotates independentlyof the shaft for a lengthwise distance slightly greater than the widthof the bearings 9 holding the shaft, this rotating section being shownat 22 in dotted lines in Figure 5, although the precise construction ofthe rewind shaft forms no part of the present invention. As the rewindshaft is placed in the ready trough 20 it is preferably so placed thatthe guide 23 is between the collars 21 of the spool end of the rewindshaft 7 so as to accurately guide the shaft longitudinally as it ismoved sidewise from the ready trough 20 by the pick-up arms 19 over thefront winding roll 6, the guide extending substantially to the valleybetween the winding rolls as shown at 24.

Lowering arms 25 are likewise pivoted around collar 16. These arms haverigidly attached thereto racks 26. Pick-up arms 19 have integrallythereon concentric with racks 26, racks 27. Pinions 18 above describedare geared between these two racks 26 and 27 so that movement of thepick-up arms 10 is imparted to lowering arms 25 and because thecircumference of racks 27 is less than that of racks 26, a givenmovement of pick-up arms 19 imparts a lesser movement or a smaller arcof movement to lowering arms 25. Both sets of arms 19 and 25 in theirattachement to flanged collar 16 are divided into sections which arerigidly connected together by screws 29 and 28 respectively. The flangeson both sides of the collar 16 hold the arms securely in place.

Double acting hydraulic cylinders 30 operate pistons 31 connected topick-up arms 19 in either direction to either raise or lower these arms.Levers 32 are rigidly connected to shaft 33 extending the width of themachine and to these levers are connected links 34 connected to thelowering arms 25 at 35. By this construction shaft 33 serves as asynchronizing shaft to assure that movements of the lowering arms 25 atboth sides of the machine always take place in unison. Because of thearms at both ends of the machine being connected by the gearing abovedescribed this synchronizing shaft likewise assures that both pick-uparms 19 also always act in unison.

It will therefore be apparent as shown in Figures 1 and 3 that a rewindshaft resting in ready trough 20 may be lifted therefrom by pick-up arms19 and passed over the highest horizontal portions of the front windingroll 6 along which it rolls a distance until encountered by the loweringarms 25 which have moved up simultaneously with the raising of thepick-up arms to receive the on- Patented Aug. 21, 1956' coming rewindshaft and lower it slowly into the bearings 9.and into the valleybetween the winding rolls 6 and 8 where it is ready to be threaded withthe web and on which the running web is then wound. It will be apparentfrom the above detailed description that many modifications of theprecise structure of the loader may be made without departing from thespirit of the invention. What is claimed as new and is desired to besecured by Letters Patent is:

1. In a winding machine having front and rear surface winding rollsspaced apart and rotatable in the same direction to receive in thevalley between them a rewind shaft, the improvement comprising, pick-uparms pivoted substantially axially of and at each end of the frontwinding roll to receive thereon a rewind shaft and lift the same overthe front winding roll, pivoted lowering arms at the ends of andprojecting from the front winding roll pivoting separately from thelifting arms to receive a rewind shaft raised by the pick-up arms andlower it into said valley and means to actuate and coordinate thepivoting of the arms simultaneously in opposed directions to raise ashaft and then lower it.

2. In a winding machine having front and rear surface winding rollsspaced apart and rotatable in the same direction to receive in thevalley between them a rewind shaft and a ready trough forward of thefront roll, the improvement comprising, pick-up arms pivotedsubstantially axially of and at each end of the front winding rollextending forward to the ready trough to receive thereon a rewind shaftand lift the same from the ready trough and over the front winding roll,lowering arms at the ends of and projecting from the front winding rollpivoted coaxially with and pivoting separately from the lifting arms toreceive a rewind shaft raised by the pick-up arms and lower it into saidvalley and means to actuate and coordinate the pivoting of the arms toraise a shaft and then lower it.

3. In a winding machine having front and rear surface winding rollsspaced apart and rotatable in the same direction to receive in thevalley between them a rewind shaft and a ready trough forward of thefront roll, the improvement comprising a pair of pick-up arms pivotedsubstantially axially of and at each end of the front winding rollextending forward to the ready trough to receive thereon a rewind shaftand lift the same from the ready trough and over the front winding roll,a pair of pivoted lowering arms at the ends of and projecting from thefront winding roll pivoting separately from the lifting arms to receivea rewind shaft raised by the pick-up arms and lower it into said valleyand moving means to move said pairs of arms through separate fixed arcs,one pair through an are greater than the other pair simultaneously.

4. In a winding machine having front and rear surface winding rollsspaced apart and rotatable in the same direction to receive in thevalley between them a rewind shaft and a ready trough forward of thefront roll, the improvement comprising, a pair of pick-up arms pivotedsubstantially axially of and at each end of the front winding rollextending forward to the ready trough to receive thereon a rewind shaftand lift the same from the ready trough and over the front winding roll,a pair of pivoted lowering arms at the ends of and projecting from thefront winding roll pivoting separately from the lifting arms to receivea rewind shaft raised by the pick-up arms and lower it into said valleyand means to connect said pairs of arms together at each end of therewind rolls to move one pair when the other is moved.

In a winding machine having front and rear surface winding rolls spacedapart and rotatable in the same direction to receive in the valleybetween them a rewind shaft, the improvement comprising, a pair ofpick-up arms pivoted substantially axially of and at each end of thefront winding roll to receive thereon a rewind shaft and lift the sameover the front winding roll, a pair of pivoted lowering arms at the endsof and projecting from the front winding roll pivoting separately fromthe lifting arms to receive a rewind shaft raised by the pick-up armsand lower it into said valley, and gears on both pairs of arms and gearsbetween said gears on the pairs of arms connecting the pairs of armstogether, whereby movements of one pair impart movement to the other.

6. In a winding machine having front and rear surface winding rollsspaced apart and rotatable in the same direction to receive in thevalley between them a rewind shaft, the improvement comprising, a pairof pick-up arms pivoted substantially axially of and at each end of thefront winding roll to receive thereon a rewind shaft and lift the sameover the front winding roll, a pair of pivoted lowering arms at the endsof and projecting from the front winding roll pivoting separately fromthe lifting arms to receive a rewind shaft raised by the pick-up armsand lower it into said valley and gears on both pairs of arms and gearsbetween said gears on the pairs of arms connecting the pairs of armstogether whereby movements of one pair are simultaneously imparted tothe other, said gears being related to each other to move one pair ofarms in a greater arc than the other and means to move said pairsthrough fixed arcs.

7. In a winding machine having front and rear surface winding rollsspaced apart and rotatable in the same direction to receive in thevalley between them a rewind shaft, the improvement comprising, a pairof pick-up arms pivoted substantially axially of and at each end of thefront winding roll to receive thereon a rewind shaft and lift the sameover the front winding roll, a pair of lowering arms at the ends of andprojecting from the front winding roll pivoted coaxially with thelifting arms to receive a rewind shaft raised by the pick-up arms andlower it into said valley and gears on both pairs of arms and gearsbetween said gears on the pairs of arms connecting the pairs of armstogether whereby movements of one pair are simultaneously imparted tothe other, said gears being related to each other to move one pair ofarms in a greater are than the other.

8. In a winding machine having front and rear surface Winding rollsspaced apart and rotatable in the same direction to receive in thevalley between them a rewind shaft and a ready trough parallel to andforward from said front roll, the improvement comprising, pick-up armspivoted substantially axially of and at each end of the front windingroll to lift a rewind shaft from the ready trough and move it over thefront winding roll, pivoted lowering arms at the ends of and projectingfrom the front winding roll pivoting separately from the lifting arms toreceive a rewind shaft raised by the pick-up arms and lower it into saidvalley.

9. In a winding machine having front and rear surface winding rollsspaced apart and rotatable in the same direction to receive in thevalley between them a rewind shaft and a ready trough forward of thefront roll, the improvement comprising, a pair of pick-up arms pivotedsubstantially axially of and at each end of the front winding rollextending forward to the ready trough to receive thereon a rewind shaftand lift the same from the ready trough and over the front winding roll,a pair of pivoted lowering arms at the ends of and projecting from thefront winding roll pivoting separately from the lifting arms to receivea rewind shaft raised by the pick-up arms and lower it into said valley,means to connect said pairs of arms together at each end of the rewindrolls to move one pair when the other is moved and separate means ateach end of said front winding roll to move said arms to raise and lowera rewind shaft between the winding rolls.

10. In a winding machine having front and rear surface winding rollsspaced apart and rotatable in the same direction to receive in thevalley between them a rewind shaft, the improvement comprising, a pairof pick-up arms pivoted substantially axially of and at each end of thefront winding roll to receive thereon a rewind shaft and lift the sameover the front winding roll, a pair of pivoted lowering arms at the endsof and projecting from the front winding roll pivoting separately fromthe lifting arms to receive a rewind shaft raised by the pick-up armsand lower it into said valley, means to connect said pairs of armstogether at each end of the rewind rolls to move one pair when the otheris moved, separate means at each end of said front winding roll to movesaid arms to raise and lower a rewind shaft between the winding rollsand synchronizing means extending between the arms at each end of thefront winding roll to coordinate the movement of the arms at one endwith those at the other end.

11. In a Winding machine having front and rear surface Winding rollsspaced apart and rotatable in the same direction to receive in thevalley between them a rewind shaft, the improvement comprising, a pairof pick-up arms pivoted substantially axially of and at each end of thefront winding roll to receive thereon a rewind shaft and lift the sameover the front winding roll, a pair of pivoted lowering arms at the endsof and projecting from the front winding roll pivoting separately fromthe lifting arms to receive a rewind shaft, raised by the pick-up armsand lower it into said valley and separate means at each end of saidfront winding roll to move said separate pairs of arms in oppositedirections to raise and lower a rewind shaft between the winding rolls.

12. in a winding machine having front and rear surface winding rollsspaced apart and rotatable in the same direction to receive in thevalley between them a rewind shaft, the improvement comprising, a pairof pick-up arms pivoted substantially axially of and at each end of thefront winding roll to receive thereon a rewind shaft and lift the sameover the front winding roll, a pair of pivoted lowering arms at the endsof and projecting from the front winding roll pivoting separately fromthe lifting arms to receive a rewind shaft raised by the pick-up armsand lower it into said valley, separate means at each end of said frontwinding roll to move said arms to raise and lower a rewind shaft betweenthe winding rolls and synchronizing means extending between the arms ateach end of the front winding roll to coordinate the movement of thearms at one end with those at the other end.

13. In a winding machine having front and rear surface winding rollsspaced apart and rotatable in the same direction to receive in thevalley between them a rewind shaft, the improvement comprising, a pairof pick-up arms pivoted substantially axially of and at each end of thefront winding roll to receive thereon a rewind shaft and lift the sameover the front winding roll, a pair of lowering arms at the ends of andprojecting from the front winding roll pivoted coaxially with thelifting arms to receive a rewind shaft raised by the pick-up arms andlower it into said valley and gears on both pairs of arms and gearsbetween said gears on the pairs of arms connecting the pairs of armstogether whereby movements of one pair are simultaneously imparted tothe other and separate means at each end of said front winding roll tomove said arms to raise and lower a rewind shaft between the windingrolls.

14. In a winding machine having front and rear surface winding rollsspaced apart and rotatable in the same direction to receive in thevalley between them a rewind shaft, the improvement comprising, a pairof pick-up arms pivoted substantially axially of and at each end of thefront winding roll to receive thereon a rewind shaft and lift the sameover the front winding roll, a pair of lowering arms at the ends of andprojecting from the front winding roll pivoted coaxially with thelifting arms to receive a rewind shaft raised by the pick-up arms andlower it into said valley and gears on both pairs of arms and gearsbetween said gears on the pairs of arms connecting the pairs of armstogether whereby movements of one pair are simultaneously imparted tothe other, separate means at each end of said front winding roll to movesaid arms to raise and lower a rewind shaft between the winding rollsand synchronizing means extending between the arms at each end of thefront winding roll to coordinate the movement of the arms at one endwith those at the other end.

15. In a winding machine having front and rear surface Winding rollsspaced apart and rotatable in the same direction to receive in thevalley between them a rewind shaft, the improvement comprising, a pairof pick-up arms pivoted substantially axially of and at each end of thefront winding roll to receive thereon a rewind shaft and lift the sameover the front winding roll, a pair pivoted lowering arms at the ends ofand projecting from the front winding roll pivoting separately from thelifting arms to receive a rewind shaft raised by the pick-up arms andlower it into said valley, means to connect said pairs of arms togetherat each end of the rewind rolls to move one pair when the other is movedand means at each end of said front winding roll to move said separatepairs of arms toward and away from each other to raise and lower arewind shaft between the winding rolls and synchronizing means extendingbetween the arms at each end of the front winding roll to move the armsat one end simultaneously with those at the other end.

References Cited in the file of this patent UNITED STATES PATENTS1,939,198 Berry Dec. 12, 1933 2,337,585 Berry Dec. 28, 1943 2,682,379Piper et a1 June 29, 1954

